[Test-Equipment] Another boat anchor - Del Electric High voltage supply?

[rbethman]

I do indeed understand "other forms" of HV non-destructive testing.

Remember, we are primarily geared to Amateur Radio.  I for one have no 
interest in the CB folks that get into the 20-40KW dissipation finals.

I DO know what a 100KV @ 150KVA transformer looks like when the "simple" 
potential causes it to come unglued.  BTW, it was brand new when 
tested.  Hence my commentary on a 1/2" thick expanded steel mesh, welded 
to a 3/4" welded steel cage with a 1/2" copper plate for a floor.

Lexan or plexiglass will NOT contain the components!

I haven't been remotely concerned with "hair raising".  I am more 
concerned with continuing with life.

I've also done the X-ray and ultrasonic testing for welding too.

There is "risk" all around.  You manage it with balance.  And NO I am 
not paranoid!  I still drive on the highway without armor plating!  
However, I always EXPECT an adjacent vehicle to do "just" what I don't 
want.  It is the mentality developed from 40 years of riding 
motorcycles.  I never had an accident with one.  The worst accident I've 
been in, was a rear-end collision on an Interstate, caused by some "yard 
bird" NOT paying attention to the fact that ALL traffic had stopped.  He 
obviously wasn't watching when he hit the rear of my car at over 45.

That was the only time that I blacked out.  Other than surgical 
anesthesia that is.

Bob - N0DGN

On 11/5/2010 2:27 PM, Carl wrote:
>
>> I do understand high potential testing.
>
> I wonder if you do understand other forms of HV non destructive testing
>
>>
>> When I "look" at the voltage range - and "see" 40 to 50KV on the 
>> metering, even testing to 4 times the plate voltage, would mean that 
>> one is using around 5KV in the final.
>>
>> The ONLY place I see that used would be a 3-1000 or 4-1000A final in 
>> an amplifier.
>
>
> Those are OK for glass tubes. Others use tubes with handles in those 
> converted BCB rigs.
>
> The CBers go even higher and are rather fanatical about hi potting 
> those 20-40KW dissipation tubes they buy
>
>
>>
>> I'm NOT going into the 40KV to 50KV range in my shack.  That sort of 
>> testing requires an appropriate lab, equipped with a "cage" to retain 
>> pieces and parts.
>
>
> Not necessary at least to 40KV otherwise you couldnt use an older TV.  
> We are not talking power here, just voltage at very low current 
> capability from the transformer that is further severely current 
> limited. Leakage in a tube is measured in microamps. The whole setup 
> fits on a table with the control section isolated from the HV with 
> Plexiglass or Lexan so you can also see what is going on if necessary. 
> If you get too close your hair will react. The transformer can be a 
> 13-14KV neon sign transformer with a doubler. The low value filter 
> caps take up most of the room.
>
>
>>
>> I "can" understand 10KV to 16KV.  The old color TVs did indeed go 
>> upward to about 30KV.  You had to bypass a fair bit of safety to get 
>> near it.
>>
>> Bob - N0DGN
>
> Here is some good reading for the home brewer that has been built by 
> many.
>
> Carl
> KM1H